http://i.kinja-img.com/gawker-media/image/upload/s--oj6ET1u4--/c_fit,fl_progressive,q_80,w_636/sbdqwyncex6ypvjrmmwm.gif
I'd love to have a huge list of emotes you could just hotkey or whatever.
Even slow headshaking at a downward angle could be the Look of Disapproval.